<PRE><B>Question 287033</B>
I believe you mean:

{{{(v^2/25)-1 = 11}}} - multiply through by 25
---
{{{v^2 - 25 = 275}}} --- Now, add 25 to both sides
---
{{{v^2 = 250}}} --- now take the square root of each side
---
{{{v = sqrt(250)}}} (plus and minus in front, of course), which should be simplfied
</PRE>